Multiple positive solutions for singular semipositone periodic boundary value problems with derivative dependence (Q1760631)

Summary: By constructing a special cone in \(C^1[0, 2\pi]\) and applying a fixed point theorem, this paper investigates second-order singular semipositone periodic boundary value problems with dependence on the first-order derivative and obtains the existence of multiple positive solutions. Further, an example is given to demonstrate the applicability of our main results.